3 years ago

How should Rhianna write the height of the Grand teton in standard form?

Mathematics

2 answers:

Gnesinka [82]3 years ago

6 0

The answer to your question is A

RSB [31]3 years ago

5 0

The answer to the question is A

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Find the 78th term of the arithmetic sequence –4,-2,0,...

MArishka [77]

The number is increasing by 2 every time.

78 x 2 = 156

-4 + 156 = 152

The 78th term is 152

8 0

3 years ago

The ratio of girls to boys who participated in the quiz bowl was 7:5. There were 42 girls in the competition. How many boys part

Zinaida [17]

The way i do it, is sort of like this :

Is 7 a factor of 42?
Is 5 a factor of 42?

7 is a factor of 42.
It must be in multiples of 7!

Therefore, we have 5 on the other side, which makes it 5 x 7 = 35

7 0

3 years ago

5x-7y=-2 -5x-10y=-15

seraphim [82]

{5x-7y=-2

{-5x-10y=-15 (+)

5x-5x-7y-10y=-17

-17y=-17 /:(-17)

y=1

5x-7 *1=-2

5x-7=-2 /+7

5x=5 /:5

x=1

Solution: (1; 1)

8 0

3 years ago

39. Find the length of each arc shown in red. Leave your answer in simplified radical form.

andre [41]

Answer:

The length of the arc shown in red is $\frac{22}{9}\pi\ in$

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

$C=2\pi r$

we have

$r=4\ in$

substitute

$C=2\pi (4)$

$C=8\pi\ in$

step 2

Find the length of the arc in red

Remember that the length of the circumference subtends a central angle of 360 degrees

by proportion find the length of the arc by a central angle of 110 degrees

$\frac{8\pi}{360}=\frac{x}{110}\\ \\x=8\pi*110/360\\ \\x=\frac{880}{360}\pi\ in$

Simplify

$\frac{880}{360}\pi=\frac{22}{9}\pi\ in$

6 0

3 years ago

Triangle ABC has the following characteristics. Angle A is right angle. AB=8. AC= 15. Find BC

Novay_Z [31]

Answer is c
use pythagorean
a^2 + b^2 = c^2

8^2+15^2= c^2
289=c^2

sqrt both sides

c=17

BC=17

8 0

2 years ago